JP2009148496A - Desk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a desk for which an attachment part can be decorated by a cover body without damaging working efficiency when attaching and detaching a desktop option such as a desktop panel to/from a top plate. <P>SOLUTION: When a part of a frame structure A supporting the top plate 4 is formed as a base 5, the base end of the desktop panel 6 which is the desktop option is made attachable from above to an attaching area B1 set to the base 5, and the base 5 is configured to be covered with the cover body C capable of changing a form according to the kind of the desktop option such as the desktop panel 6 and its presence/no presence, the cover body C is fixed to the base 5 at a position evading at least the attaching area B1 of the desktop panel 6 which is the desktop option and a state opened upwards is taken without narrowing the attaching area B1 in the middle. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a desk in which a desktop option such as a desktop panel can be attached to and detached from a top board by a cover body without damaging workability.

  Conventionally, when desktop options such as desktop panels are attached to the top plate, the base end of the desktop option is installed in a part of the structure that supports the top plate, and there is an opening through which the column is inserted. A cover is usually mounted so as to cover the base end from above, and the cover is fixed to the structure with bolts. Although such a structure itself is well known, there is no particular patent document disclosing this.

  However, with such a cover mounting structure, the bolts must be released and the cover removed without fail when attaching or removing a desktop option such as a desktop panel. For this reason, there exists a problem that workability | operativity is very bad. On the other hand, if the cover can be easily mounted, the cover may easily come off during use, so that the original function of the cover is likely to be impaired. In addition, when adding a number of top panels, a desktop option such as a desktop panel has a column located at the boundary of the top panel, and there is a problem that a completely different cover must be used conventionally.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a desk that solves such problems and facilitates handling of a cover when a desktop option such as a desktop panel is attached or detached.

  In order to achieve this object, the present invention takes the following measures.

  That is, the desk of the present invention uses a part of the structure supporting the top plate as a pedestal, and allows the base end of the desktop option to be attached to the attachment region set on the pedestal from a predetermined direction. The cover body is covered with a cover body that can change the form according to the presence or absence of an option, and the cover body is fixed to the base at a position avoiding the attachment area of the desktop option at least, and the attachment area is narrowed in the middle. It is comprised so that the state open | released in the said predetermined direction can be taken without.

  According to this structure, the base end of the desktop option can be attached to and detached from the pedestal while passing through the base end of the desktop option in a predetermined direction without interfering with the cover while leaving at least a part of the cover body fixed to the pedestal. Therefore, workability can be effectively improved as compared with the case where the entire cover body is fastened or removed with a bolt each time the desktop option is attached or detached.

  In order to achieve both the appropriate fixing state of the cover body and the workability when attaching / detaching the desktop option, the cover body is separated from the base and the base part fixed to the base via the fastening device. A cap portion that is detachably attached to the base portion at the position and shields the fastening device. The base portion opens the attachment region in a predetermined direction, and the entire attachment region is obtained by attaching the cap portion. Or what is comprised so that a part can be closed becomes effective.

  When the desktop option has a mounting part that expands at the base end of the column, a recess that allows the mounting part to pass through is formed in the base part along a predetermined direction, and the mounting part is provided on the cap part. It is preferable to provide an opening window that is smaller than that of the support and that can be opened and closed.

  In order to effectively apply a common cover body to various desktop options, it is preferable that the cap portion is configured to be able to form a plurality of opening windows having different forms.

  When a pair of cover bodies are fixed to a pedestal that is spaced apart in the top plate width direction on the structure and a duct cover is attached between these cover bodies, the duct cover has protrusions at both ends, and the cover body It is desirable to provide a recess for supporting the protrusion so that the recess can be opened and closed by attaching and detaching the cap portion to the base portion.

  In particular, it is preferable that the protrusion is a shaft and the recess constitutes a bearing in order to simultaneously realize the ease of attachment / detachment of the duct cover and good usability.

  If the structure has intermediate legs between the end legs and the end legs are connected to the intermediate legs or between the intermediate legs via a beam, the pedestal is near both ends of the beam. A first mounting area for attaching a base end of a separate desk top option, and a base end of a common desk top option together with the adjacent base. The cover body covering each pedestal is set in a state where the first attachment area is opened upward without narrowing the middle of the first attachment area. It is advantageous that the mounting area can be opened upward without being narrowed in the middle.

  In this case, each of the pair of cover bodies includes a base portion fixed to the pedestal via a fastening device, and a cap portion that is detachably attached to the base portion and shields the fastening device. The base portion is configured such that the first attachment region is opened upward and the cap portion is attached so that all or a part of the first attachment region can be closed, and both the base portions cooperate with each other. Then, the second attachment area may be opened upward, and the cap part may be attached so that all or part of the second attachment area can be closed.

  Since the present invention has the configuration described above, when attaching / detaching a desktop option such as a desktop panel to / from the top plate, the cover body that covers the mounting portion should be tightened or loosened each time. In addition, it is possible to provide a new and useful desk that can effectively cope with the installation, movement, and layout change of the desk while ensuring an appropriate makeup function for the desktop option.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  In this embodiment, as shown in FIG. 1, an intermediate leg 2 is provided between a pair of end legs 1, 1, and the adjacent end leg 1 and the intermediate leg 2 are connected by a beam 3. In addition to constituting the structure A, the top plate 4 is placed on each pair so as to be usable in the depth direction across the end legs 1 and the intermediate legs 2 of the frame structure A. Consists of a desk.

  As shown in FIG. 2, the end leg 1 has a panel shape as a whole, and the intermediate leg 2 has a substantially T-shape with a stay portion 22 provided on the upper end of the support 21 as shown in FIG. The beam 3 is attached at a position connecting the upper end portions of the end leg 1 and the intermediate leg 2 in the center in the depth direction. The inside of the beam 3 forms a cord duct space S opened upward.

  And the lower surface near the corresponding side edge of the top plate 4 is placed on the top plate receivers 13 and 23 of the end leg 1 and the intermediate leg 2 that are self-supported by the beam 3, respectively. The top plate 4 is fixed to the end leg 1 and the intermediate leg 2 by fixing the inserted screw (not shown) to the lower surface of the top plate 4. When the top plate is attached, the code duct space S of the beam 3 is opened upward between the counter-use edges 4a and 4a of the top plate 4 facing in the depth direction.

  In such a configuration, in the present embodiment, seat plates 51 are attached in the vicinity of both ends of the beam 3 that is a part of the frame structure A that supports the top plate 4 as shown in FIGS. A first mounting region B1 having a T-shape as shown by hatching in the figure is set on the pedestal 5, and the first mounting region B1 is exemplified in FIGS. 4 to 6. As described above, the base end of the support 61 attached to the desktop panel 6 that is a desktop option can be attached from above, and the pedestal 5 is covered with a cover body C that can change the form depending on the presence or absence of the desktop panel 6. I have to.

  The desktop panel 6 has a panel body 60 supported in the vicinity of both ends thereof by the support 61, and a T-shaped bracket 62 as a mounting portion is attached to the lower end of the support 61 by being partially overlapped. A bolt passage hole 63 is provided at the tip of the bracket that expands and extends in the depth direction of the top plate. The desktop panel 6 in the illustrated example has a width dimension corresponding to one top plate width.

  On the other hand, as shown in FIGS. 2 and 4, the seat plate 51 constituting the pedestal 5 is positioned from the inner side in the top plate width direction so as to correspond to the bolt passage hole 63 of the bracket 62. 5a is provided, and a second screw hole 5b forming a pair for attaching the cover body C is provided from the outside in the top plate width direction. What is indicated by reference numeral 5d in the figure is a hole for mounting the base.

  On the other hand, as shown in FIGS. 4 and 5, the cover body C includes a base portion 7 that is fixed to the base 5 via a bolt v <b> 1 that is a fastener, and a cap that is detachably attached to the base portion 7. Part 8.

  The base portion 7 includes a pair of bottom walls 71 that are placed on the pedestal 5 while avoiding the first attachment region B1 to which the bracket 62 is attached, and standing walls that rise from the bottom wall 71 while avoiding the first attachment region B1. 72. The bottom wall 71 is arranged in a pair so as to cover the second screw hole 5b provided in the seat plate 51, and the bottom wall 71 has a bolt at a position continuous with the second screw hole 5b. A passage hole 71 b is provided, and the bottom walls 71 b are connected to each other by a standing wall 72. The upright wall 72 forms an inner wall 72a that substantially surrounds the outer edge of the bracket when viewed in plan, and the outer side is a first outer wall 72b parallel to the counter-use edge 4a of the top plate 4 and the outer end of the top plate 4 At least a second outer wall 72c substantially matching the portion and a third outer wall 72d located on the cord duct space S side are formed. The concave portion P formed on the inner side of the inner wall 72a is opened upward while maintaining substantially the same cross section, and the concave portion P is opened outward through an opening 72c1 provided in a part of the second outer wall 72c. Yes. An upward surface 72e is set near the upper portion of the third outer wall 72d to place the vicinity of an end portion of the duct cover 9 to be described later, and extends in the top plate width direction at an adjacent position of the upward surface 72e and opens inward. A recess 72f is formed. Engaged portions 7 a and 7 b for detachably engaging the cap portion 8 are set on a part of the base portion 7.

  The cap unit 8 includes a cap body 81 and auxiliary caps 82, 83, and 84 that are attached to and detached from the cap body 81, and the auxiliary caps 82, 83, and 84 are all attached to the cap body 81 in plan view. In FIG. 5, the upper part of the base portion 7 is substantially sealed. And it has engaging part 8a, 8b engaged with the to-be-engaged part 7a, 7b of the said base part 7, and it extends in the top plate width direction corresponding to the recess 72f of the said base part 7 in the inner lower surface. A recess 82f that opens to the inside is formed. These recesses 72f and 82f face each other to form a shaft hole. The cap body 81 is provided with a first opening window 81x that has a U-shape in plan view and extends outward from the center, and the auxiliary cap 82 is detachably attached to a position that opens and closes the first opening window 81x. The auxiliary cap 82 is further provided with a second opening window 82y that opens to the inside and a third opening window 82z that opens to the outside, and closes the second and third opening windows 82y and 82z. Smaller auxiliary caps 83 and 84 are detachably attached to the positions. Each of the opening windows 81x, 82y, and 82z is set to have a size that is larger than the corresponding column and smaller than the attachment region B1 so that columns having different cross-sectional shapes can be inserted when opened.

  In order to attach the desktop 6 to the pedestal 5 together with such a cover body C, first, the bolt v1 is inserted from above into the bolt passage hole 71b provided in the base portion 7 of the cover body C as shown in FIG. The base 7 is fixed on the pedestal 5 by being fastened to the second screw holes 5 b provided in the pedestal 5. In this state, the first mounting region B1 of the base 5 is opened so that it can be seen from above the base portion 7. Therefore, as shown in FIGS. A bracket 62 having a letter shape can be inserted and placed on the base 5. Then, the bolt V <b> 2 is inserted into the bolt passage hole 63 of the bracket 62 and fastened to the first screw hole 5 a provided in the base 5. After this, the duct cover 9 provided in a shape for closing the duct space S is engaged with the shaft portion 91, which is a projection protruding from the side end thereof, into the recess 72 f of the base portion 7 from above. Place the periphery of the end portion on the upward surface 72e, and fit the cap body 81 from the inside and the remaining auxiliary caps 82, 84 with the auxiliary cap 83 removed from the outside, fitting the struts 61 from both sides, respectively. 81 is attached to the base part 7. Then, as shown by the arrow in FIG. 6, the base body 7 is dropped by the cap portion 8 in a state where the base end of the column 61 is blinded by dropping the panel body 60 from above and inserting a mounting hole (not shown) into the column 61. It is possible to realize a state in which the duct cover 9 is attached at the same time as the lid 61 is sealed and the support 61 is passed through the second opening window 82y closely.

  In addition, as shown in FIG. 10, there is a case where one desktop panel 106 is attached to the desk across a plurality of top plates 4, 4 in the top plate width direction. In this case, a rectangular second attachment region B2 set on both pedestals 5 and 5 straddling the intermediate leg 2 as shown by hatching in FIG. 7 is used. As shown in FIG. 8, the base portion 7 constituting the cover body C is attached with the bottom wall 71 and the inner wall 72a and the outer walls 72b, 72c, 72d as standing walls avoiding the second attachment region B2. The second mounting region B2 is open so that it can be seen from above, and a column 161 having a cross section different from that of the column 61 supporting the intermediate part of the panel main body 160 is positioned directly above the intermediate leg 2. It is attached with. For this purpose, a strip-shaped bracket 162, which is a mounting portion having a shape different from the above, is attached to the lower end of the column 161 by being partially overlapped, and extends from the column 161 in the top plate width direction. A bolt passage hole 163 is provided at the tip of the bracket.

  On the other hand, a third screw hole 5c is provided in the middle of the first screw hole 5a and the second screw hole 5b in the center of the base 5 shown in FIG. is there.

  In order to attach such a desktop panel 106 to the pedestal 5 using the cover C described above as it is, a bolt is first inserted into the bolt passage hole 71b provided in the base portion 7 of the cover C from above as shown in FIG. v <b> 1 is inserted and fastened to the second screw hole 5 b provided in the base 5, and the base portion 7 is fixed on the base 5. When the cover body C is already attached to the base 5, this operation is not necessary. In this state, the second mounting region B2 of the pedestal 5 is open so that it can be seen from above the base portion 7. Therefore, as shown in FIGS. A bracket 162 having a shape can be inserted and placed on the base 5. Then, a bolt is inserted into the bolt passage hole 163 of the bracket 162 and fastened to the third screw hole 5 c provided in the base 5. After this, the duct cover 9 provided in a shape for closing the duct space S is engaged with the shaft portion 91 projecting from the side end of the duct cover 9 in the recess 72f of the base portion 7 from above, and the upward surface 72e. The cap body 81 is mounted on both sides and attached to the base portion 7 with the auxiliary caps 82 and 83 attached and the auxiliary cap 81 removed, with the support column 61 being sandwiched, and from the upper side as indicated by arrows in FIG. By dropping the panel main body 160 and inserting a mounting hole (not shown) into the column 161, the base portion 7 is covered with the cap unit 8 in a state where the base end of the column 161 is blinded, and the third opening windows 82z are connected to each other. It is possible to realize a state in which the column cover 161 is attached at the same time as the support column 161 is closely penetrated through the larger opening window that is in communication.

  Note that the first opening window 81x is applied to a column having a cross section larger than that of the columns 61 and 161, and description of such an aspect is omitted in this specification.

  As described above, the cover body C can be changed in form according to the shapes of the columns 61 and 161 of the desktop panels 6 and 106 which are desktop options attached to the pedestal 5, as well as the desktop panels 6 and 106, etc. When the desktop option is not attached, all the auxiliary caps 82, 83, 84 are attached to the cap body 81 and the base portion 7 is completely closed by the cap portion 8.

  As described above, the desk according to the present embodiment uses a part of the frame structure A that supports the top plate 4 as the pedestal 5, and the desktop panel 6 that is a desktop option from above in the attachment areas B 1 and B 2 set on the pedestal 5. , 106 can be attached, and the pedestal 5 is covered with a cover body C whose form can be changed according to the type of desktop options such as the desktop panels 6 and 106 and the presence or absence thereof.

  The cover body C is fixed to the pedestal 5 at a position avoiding at least the attachment areas B1 and B2 of the desktop panels 6 and 106 which are desktop options, and the attachment areas B1 and B2 are opened upward without being narrowed in the middle. It is configured to be able to take.

  For this reason, while leaving at least a part of the cover body C fixed to the pedestal 5, the base end of the desktop panel 6, 106 which is a desktop option is passed vertically without interfering with the cover body C, and the pedestal 5 As compared with the case where the entire cover C is attached or detached each time the desktop panels 6 and 106 are attached or detached, the workability can be improved effectively.

  Further, the cover C is fixed to the pedestal 5 via a bolt v1 serving as a fastening tool, and the cover C is detachably attached to the base 7 at a position spaced upward from the pedestal 5, and the stop The base part 7 opens with the attachment areas B1 and B2 upward and is attached together with the support columns 6 and 106 by attaching the cap part C. It is comprised so that substantially all of area | region B1, B2 can be closed.

  Thus, if the cap part 8 is attached to and detached from the base part 7, the form of the cover body C can be effectively changed according to the presence or absence of desktop options such as the desktop panels 6 and 106. Moreover, a function for accurately fixing the cover body C to the pedestal 5 and a function capable of easily changing the form depending on the presence or absence of desktop options such as the desktop panels 6 and 106 are provided in the base portion 7 and the cap portion 8 respectively. Since it was shared, it was possible to effectively solve the conflicting problem of an accurate fixed state and easy form change, and diversifying the specifications by attaching a cap part 8 of a different structure on the common base part 7, Even when resin molding or the like is performed, it is possible to easily cope with molding of a minimum number of parts.

  Further, the desktop panel 6, 106 which is a desktop option has brackets 62, 162 which are mounting portions widened at the base ends of the columns 61, 161, and the brackets 62, 162 pass through the base portion 7. The recessed portion P to be allowed is formed so as to be opened upward, and opening windows 82y and 82z smaller than the brackets 62 and 162 and larger than the columns 61 and 161 are provided in the cap portion 8 so as to be openable and closable. The same applies to the window 81x.

  Therefore, the support columns 61 and 161 are guided through the brackets 62 and 162 along the inner wall of the recess portion P of the base portion 7, and the recess portion P is effectively used as a guide when the base end portions of the support columns 61 and 161 are attached and detached. In addition, the cap portion 8 can be effectively provided with a form for accurately closing the attachment portions of the support columns 61 and 161.

  Furthermore, since the cap part 8 is configured to be able to form a plurality of opening windows 81x, 82y, and 82z having different forms, it is possible to effectively apply the common cover body C to various desk options. it can.

  In addition, this desk fixes a pair of cover bodies C to pedestals 5 and 5 that are spaced apart in the top plate width direction on the frame structure A, and a duct cover 9 is attached between the cover bodies C and C. The duct cover 9 has shaft portions 91 that are protrusions at both ends, and the cover body C is provided with recesses 72f and 82f that support the shaft portion 91, and the recesses 72f and 82f. Since the cap part 8 can be opened and closed by attaching / detaching the cap part 8 to / from the base part 7, the duct cover 9 can be attached / detached simultaneously with the attachment / detachment of the cap part 8 to / from the base part 7, and the duct cover 9 can also be held. It can be done effectively by the body C.

  Further, since the projection 91 is a shaft and the recesses 72f and 82f are in contact with each other to form a bearing, the ease of attaching and detaching the duct cover 9 and its good usability can be realized at the same time.

  Specifically, in this desk, the frame structure A has an intermediate leg 2 between the end legs 1, and a beam 3 is provided between the end legs 1 and the intermediate legs 2, or between the intermediate legs 2 and 2. The pedestal 5 is provided on the upward surface in the vicinity of both ends of the beam 3, and the pedestals 5 and 5 adjacent to each other with the intermediate leg 2 interposed therebetween are separated from each other as shown in FIGS. The base of the desktop panel 106 which is a common desktop option together with the first mounting region B1 for mounting the base end of the desktop panel 6 which is a desktop option and the adjacent bases 5 and 5 as shown in FIGS. The second mounting area B2 for mounting the end is set, and the cover body C covering each of the pedestals 5 and 5 is opened upward without individually narrowing the first mounting area B1 in the middle. And in the middle of the second mounting area B2 Since it is configured to be able to take a state of being opened upward without turning over, it is possible to use any of the columns 61 of the desktop panels 6 and 106 which are desktop options using the common base 5 and the common cover body C. 161 can be effectively handled.

  In this case, the pair of cover bodies C and C includes a base portion 7 fixed to the base 5 via a bolt v1 that is a fastening member, and a cap that is detachably attached to the base portion 7 and shields the bolt v1. Each base portion 7 opens the first attachment region B1 upward, and the cap portion 8 can be attached to close almost the entire first attachment region B1 together with the support 6. The two base portions 7 and 7 cooperate with each other to open the second attachment region B2 upward, and the cap portions 8 and 8 are attached to the second attachment region together with the support column 106. Since almost all of B1 can be closed, the base ends of the desktop panels 6 and 106, which are desktop options, are attached and detached while the base portion 7 of the cover C is fixed. Result, it is possible to obtain effectively for any post 61, 161 desktop panel 6,106 is a prophetic option.

  As mentioned above, although one Embodiment of this invention was described, the specific shape and structure of each part are not limited to the example of illustration, A various deformation | transformation is possible in the range which does not deviate from the meaning of this invention.

  Moreover, as a desk top option, other various things, such as a shelf, can be made into a target, and you may set the open direction of an attachment area | region other than upper direction.

The whole perspective view which saw through the top plate of the desk which concerns on one Embodiment of this invention. The disassembled perspective view which shows the 1st attachment area | region set on the base by the side of the edge part in the embodiment with a periphery structure. The disassembled perspective view which shows the 1st attachment area | region set on the base by the side of the intermediate leg in the same embodiment with a periphery structure. The perspective view which shows the attachment procedure of the desktop panel in the embodiment with a cover body. The perspective view which shows the attachment procedure of the desktop panel in the embodiment with a cover body. The perspective view which shows the attachment state of the desktop panel in the embodiment with a cover body. The disassembled perspective view which shows the 1st attachment area | region set on the base on the intermediate leg side in embodiment with a periphery structure. The perspective view which shows the attachment procedure of the other desktop panel in the embodiment with a cover body. The perspective view which shows the attachment procedure of the other desktop panel in the embodiment with a cover body. The perspective view which shows the attachment state of the desktop panel in the embodiment with a cover body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... End leg 2 ... Intermediate leg 3 ... Beam 4 ... Top plate 5 ... Base 6106 ... Desktop option (desktop panel)
7 ... Base part 8 ... Cap part 9 ... Duct cover 61, 161 ... Post 62, 162 ... Mounting part (bracket)
81x ... 1st opening window 82y ... 2nd opening window 82z ... 3rd opening window 91 ... Protrusion 72f, 82f ... Recess A ... Frame structure B1 ... 1st attachment area B2 ... 2nd attachment area C ... Cover body P ... Recess v1 ... Fastening device (bolt)

Claims (8)

A part of the structure that supports the top plate is a pedestal, and the base end of the desktop option can be attached to the attachment area set on the pedestal from a predetermined direction, and the pedestal is configured according to the presence or absence of the desktop option. It is covered with a cover body that can be changed,
The cover body is fixed to the pedestal at a position avoiding at least a mounting area of a desktop option, and is configured to be able to take a state opened in the predetermined direction without narrowing the mounting area. desk. The cover body includes a base portion that is fixed to the pedestal via a fastening device, and a cap portion that is detachably attached to the base portion at a position spaced from the pedestal and shields the fastening device. The desk according to claim 1, wherein the part opens the attachment area in a predetermined direction, and the attachment part is configured so that all or part of the attachment area can be closed by attaching the cap part. The desktop option has a mounting part that expands at the base end of the column, and a concave part that allows the mounting part to pass through is formed in the base part along a predetermined direction, and the cap part is smaller than the mounting part. The desk according to claim 2, wherein an opening window larger than the column is provided so as to be openable and closable. The desk according to claim 3, wherein the cap portion is configured to form a plurality of opening windows having different forms. A pair of cover bodies are fixed to a pedestal that is spaced apart in the top plate width direction on the structure, and a duct cover is attached between the cover bodies. The duct cover has protrusions at both ends. The desk according to claim 2, wherein the cover body is provided with a recess for supporting the protrusion, and the recess can be opened and closed by attaching and detaching the cap portion to the base portion. 6. The desk according to claim 5, wherein the projection is a shaft and the recess constitutes a bearing. The structure has an intermediate leg between the end legs, and the end legs and the intermediate legs or between the intermediate legs are connected via a beam, and the pedestal is located above both ends of the beam. A first mounting area for attaching a base end of a separate desk top option, and a base end of a common desk top option together with the adjacent base. The second mounting area is set, and the cover body that covers each pedestal individually opens the second mounting area in cooperation with the state in which the first mounting area is opened upward without narrowing the middle of the first mounting area. The desk according to any one of claims 1 to 6, wherein the desk is configured to be able to take a state of being opened upward without narrowing the middle. Each of the pair of cover bodies includes a base portion fixed to the pedestal via a fastening device, and a cap portion that is detachably attached to the base portion and shields the fastening device. The first attachment region is opened upward, and the cap portion is attached so that all or part of the first attachment region can be closed, and both the base portions cooperate with each other. The desk according to claim 7, wherein the two attachment areas are opened upward, and each or a part of the second attachment area can be closed by attaching a cap portion.

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